A conveying and positioning tool for cleaning a transmission housing

Abstract

The utility model provides a kind of transmission shell cleaning's conveying positioning tool, it is related to transmission shell cleaning technical field, including multistage roller conveyor and its top positioning tray, tray is equipped with the seat for positioning different model shell and positioning pin for positioning. The end of roller way is equipped with jacking mechanism and limiting mechanism, can be stably jacked and limited in cleaning position, eliminate the positioning deviation caused by conveying vibration, ensure that mechanical hand accurate capture. Through modularization tray design, adapt to multi-specification shell quick change production, to solve the current roller conveyor in transmission process due to roller cylinder shaking, prone to tray to produce longitudinal or transverse swing when stopping, tray positioning deviation can directly lead to picking failure or collision, affect cleaning efficiency and equipment safety. And existing production line usually uses special fixed tray or tooling, different specifications of shell need to be frequently replaced when producing, seriously restrict the production line work efficiency technical problem.

Description

Technical Field

[0001] This utility model mainly relates to the field of transmission housing cleaning technology, specifically to a conveying and positioning fixture for cleaning transmission housings. Background Technology

[0002] In the fields of mechanical manufacturing and automotive parts cleaning, transmission housings typically require high-pressure cleaning and drying after processing or assembly to remove surface oil and chips. Currently, these workpieces are often transported in cleaning lines using roller conveyors (1) in conjunction with dedicated pallets or tooling for conveying and positioning. The workpiece is placed on a pallet and transported to the cleaning station via the conveyor line, where it is picked up by a robot or other actuator for cleaning.

[0003] However, existing conveying and positioning methods have significant limitations. First, commonly used roller conveyors are prone to longitudinal or lateral swaying when stopped due to roller gaps, chain vibrations, or the fit gap between the pallet and the roller conveyor, making precise stopping and positioning difficult. Cleaning robots require high precision in grasping workpieces; pallet positioning deviations can directly lead to workpiece retrieval failure or collisions, affecting cleaning efficiency and equipment safety.

[0004] Secondly, existing production lines typically use dedicated fixed pallets or tooling, with each pallet often designed only for a single model of gearbox housing. As product models diversify, frequent pallet changes or adjustments to the entire conveyor line are required when producing housings of different specifications. This severely restricts the flexibility of the production line, increases equipment investment and changeover time, and fails to meet the flexible production needs of multiple varieties and small batches.

[0005] It should be noted that the above content falls within the scope of technical knowledge of those skilled in the art. Due to the vast and complex nature of the technical content in this field, the above content of this application does not necessarily constitute prior art. Utility Model Content

[0006] 1. The technical problem to be solved by the utility model: This utility model provides a conveying and positioning fixture for cleaning transmission housings, in order to solve the technical problems existing in the background art.

[0007] 2. Technical Solution: To achieve the above objectives, the technical solution provided by this utility model is as follows: a conveying and positioning fixture for cleaning a transmission housing, comprising a multi-section roller conveyor connected to each other. A positioning tray is provided on the top of the roller conveyor. Multiple supports and positioning pins are spaced apart on the top surface of the positioning tray. The supports and positioning pins are used to cooperate with corresponding structures on the transmission housing of a corresponding model to achieve positioning connection. A lifting mechanism is installed at the bottom end of the roller conveyor, with its top corresponding to the positioning tray. A limiting mechanism is also provided at the rear end of the lifting mechanism to limit the positioning tray. The operator places the transmission housing on the positioning tray, and the positioning pins and supports cooperate with the positioning grooves and corresponding parts on the transmission housing to ensure the transmission housing remains stable during conveying. As the roller conveyor starts, the positioning tray moves backward. When it reaches the end of the roller conveyor, the limiting mechanism follows the lifting mechanism to prevent the positioning tray from moving further backward. At this point, the roller conveyor continues to operate, and the positioning pallet may vibrate. Subsequently, a lifting mechanism lifts the positioning pallet, along with the gearbox housing on it, upwards a certain distance, detaching the positioning pallet from the rotating conveyor rollers at the bottom, thus significantly improving its stability. Then, a robotic gripper located on the side accurately grasps the gearbox housing at a predetermined position and performs the cleaning operation. This robotic gripper is existing technology and will not be described in detail here. After cleaning, the robotic arm places the gearbox housing back onto the positioning pallet, the lifting mechanism lowers and resets, the limiting mechanism releases its limit, and the positioning pallet, carrying the cleaned gearbox housing, continues to transport it to the next workstation. This device has a high degree of automation. Through the coordinated action of the lifting and limiting mechanisms, the positioning pallet can be stably lifted at the cleaning station, facilitating reliable gripping operations by the robotic arm. Furthermore, the positioning pallet is equipped with multiple adjustable or adaptable supports and positioning pins for different models, enabling the device to adapt to various gearbox housing positioning and transport needs, effectively expanding its applicability.

[0008] Furthermore, the support includes a positioning support one arranged in a triangle and a positioning support two arranged in a trapezoid, both of which are installed on the top surface of the positioning tray.

[0009] Furthermore, wear-resistant sliding strips are symmetrically provided on both sides of the bottom of the positioning tray.

[0010] Furthermore, side guide plates are symmetrically installed on both sides of the positioning tray.

[0011] Furthermore, two sets of buffer rubber blocks are symmetrically installed on the other two sides adjacent to the two sides on which the side guide plates are installed.

[0012] Furthermore, the positioning tray is symmetrically provided with positioning sleeves, the positioning sleeves having positioning holes in the middle, and the positioning tray is detachably connected to a limit block in the middle of its forward direction. The positioning sleeves are used to cooperate with the lifting mechanism, and the limit block is used to cooperate with the limiting mechanism.

[0013] Furthermore, the lifting mechanism includes a support platform connected to the side of the roller conveyor support leg. A linear drive device is detachably installed in the middle of the support platform, and the output shaft of the linear drive device is connected to a lifting plate. The four corners of the bottom of the lifting plate are connected to the support platform via telescopic guide columns. Support columns are connected to the four corners of the top of the lifting plate, and two of the support columns are provided with positioning protrusions that match the positioning holes. The limiting mechanism is connected to the side of the support column.

[0014] Furthermore, the limiting mechanism includes an mounting plate connected to the support column, with limiting columns symmetrically connected to both sides of the support column, and a convex limiting block at the top of the limiting column. During the process of the lifting plate driving the support column to rise or fall, the middle part of the convex limiting block can rise and fall accordingly and abut against the limiting stop, thereby realizing the limiting function.

[0015] 3. Beneficial effects: Compared with the prior art, the technical solution provided by this utility model has the following advantages: This utility model features a reasonable design. Through the coordinated design of a multi-segment roller conveyor and a liftable positioning pallet, it achieves automatic transport, precise positioning, and stable lifting of the gearbox housing at the cleaning station. The multi-station control of the lifting mechanism and the linkage design of the limit mechanism ensure that the pallet is accurately positioned without deviation during lifting and cleaning, greatly improving the reliability and accuracy of the robotic arm's gripping and cleaning operations.

[0016] The positioning pallet features a modular design for its brackets and positioning pins, allowing for flexible adjustments to accommodate the positioning needs of different housing models. The combination of triangular and trapezoidal bracket arrangements enables a single pallet to be compatible with multiple product models, significantly expanding the equipment's applicability and reducing changeover time.

[0017] The combined application of wear-resistant sliding strips, side guide plates, and buffer rubber blocks effectively reduces friction loss, running resistance, and collision impact during the conveying process. This not only protects the surface quality of the workpiece but also extends the service life of key equipment components, ensuring the stability and economy of the production process and reducing equipment maintenance costs.

[0018] It should be noted that the structures not described in this utility model are the same as or can be implemented using existing technology, and will not be elaborated here, as they do not involve the design points and improvement directions of this utility model. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the roller conveyor structure of this utility model; Figure 3 This utility model Figure 2 Enlarged schematic diagram of the structure at point A; Figure 4 This is a schematic diagram of the positioning tray structure of this utility model; Figure 5 This is a schematic diagram of the lifting mechanism and limiting mechanism of this utility model; Figure 6 This utility model Figure 5 A schematic diagram of the side structure; Figure 7 This is a schematic diagram of the structure where the transmission housing is placed on a positioning tray.

[0020] Figure label: 1. Roller conveyor; 2. Positioning pallet; 21. Wear-resistant sliding strip; 22. Side guide plate; 23. Buffer rubber block; 24. Positioning sleeve; 25. Positioning hole; 26. Limiting block; 3. Positioning support; 31. Positioning support one; 32. Positioning support two; 4. Positioning pin; 5. Lifting mechanism; 51. Support platform; 52. Linear drive device; 53. Lifting plate; 54. Telescopic guide column; 55. Support column; 56. Positioning protrusion; 6. Limiting mechanism; 61. Mounting plate; 62. Limiting column; 63. Convex limiting block. Detailed Implementation

[0021] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete.

[0022] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "fixed," "provided with," and "located in" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] It should be noted that the structures not described in this utility model do not involve the design points and improvement directions of this utility model, and can all adopt existing technologies known to those skilled in the art.

[0026] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0027] See attached document Figure 1-7A conveying and positioning fixture for cleaning transmission housings includes a multi-section roller conveyor 1 interconnected with each other. A positioning tray 2 is mounted on the top of the roller conveyor 1. Multiple supports 3 and positioning pins 4 are spaced apart on the top surface of the positioning tray 2. The supports 3 and positioning pins 4 are used to engage with corresponding structures on the transmission housing of a specific model to achieve positioning connection. A lifting mechanism 5 is installed at the bottom end of the roller conveyor 1. The top of the lifting mechanism 5 corresponds to the positioning tray 2. A limiting mechanism 6 is also provided at the rear end of the lifting mechanism 5 to limit the positioning tray 2. The operator places the transmission housing on the positioning tray 2, and the positioning pins 4 and supports 3 engage with the positioning grooves and corresponding parts on the transmission housing to ensure the transmission housing remains stable during conveying. As the roller conveyor 1 starts, the positioning tray 2 moves backward. When it reaches the end of the roller conveyor 1, the limiting mechanism 6 follows the lifting mechanism 5 to prevent the positioning tray 2 from moving further backward. At this time, the roller conveyor 1 continues to operate, and the positioning pallet 2 may vibrate. Subsequently, the lifting mechanism 5 lifts the positioning pallet 2, along with the gearbox housing on it, upwards a certain distance, causing the positioning pallet 2 to detach from the rotating conveyor rollers at the bottom, thereby significantly improving its stability. Then, a robotic gripper located on the side accurately clamps the gearbox housing at a predetermined position and performs the cleaning operation. The robotic gripper is existing technology and will not be described in detail here. After cleaning, the robotic arm places the gearbox housing back onto the positioning pallet 2, the lifting mechanism 5 lowers and resets, the limiting mechanism 6 releases its limit, and the positioning pallet 2, carrying the cleaned gearbox housing, continues to transport it to the next workstation. This device has a high degree of automation. Through the coordinated action of the lifting mechanism 5 and the limiting mechanism 6, the positioning pallet 2 can be stably lifted at the cleaning station, facilitating reliable gripping operations by the robotic arm. Furthermore, the positioning pallet 2 is equipped with multiple adjustable or adaptable supports 3 and positioning pins 4 of different models, enabling this device to adapt to various positioning and conveying needs of gearbox housings, effectively expanding its applicability.

[0028] The support 3 includes a positioning support 31 arranged in a triangle and a positioning support 32 arranged in a trapezoid. Both are installed on the top surface of the positioning tray 2. In this embodiment, by simultaneously setting the positioning supports 3 in a triangular and trapezoidal arrangement on the positioning tray 2, the positioning tray 2 can adapt to the positioning requirements of two different types of gearbox housings, thereby improving the versatility and applicability of the tooling.

[0029] The positioning pallet 2 is provided with wear-resistant sliding strips 21 symmetrically on both sides of the bottom. In this embodiment, the symmetrically arranged wear-resistant sliding strips 21 are in contact with the conveying roller of the roller conveyor 1. The wear-resistant sliding strips 21 are made of wear-resistant material and are used to reduce the friction loss between the positioning pallet 2 and the conveying roller during the conveying process, thereby effectively extending the service life of the positioning pallet 2.

[0030] The positioning pallet 2 is symmetrically equipped with side guide plates 22 on both sides. In this embodiment, the outer surface of the side guide plate 22 is a smooth plane, which cooperates with the inner side of the frame of the roller conveyor 1 to form a guiding connection. The side guide plate 22 is used to guide and limit the positioning pallet 2 during the conveying process to prevent it from deviating or getting stuck, thereby ensuring the stability and positioning accuracy of the conveying process.

[0031] On the other two sides adjacent to the sides where the side guide plates 22 are installed, two sets of buffer rubber blocks 23 are symmetrically installed. In this embodiment, the symmetrically arranged buffer rubber blocks 23 are used to absorb and buffer the impact force between the two positioning pallets 2 when they come into contact during the conveying process. This structure can effectively reduce the noise and vibration generated when the pallets come into contact, prevent the positioning pallets 2 and the gearbox housing they carry from being damaged by rigid collisions, help improve the smoothness of equipment operation, and extend the service life of related components.

[0032] The positioning tray 2 is symmetrically provided with positioning sleeves 24, each with a positioning hole 25 in the center. A limit block 26 is detachably connected to the center of the positioning tray 2 in the forward direction. The positioning sleeves 24 cooperate with the lifting mechanism 5, and the limit block 26 cooperates with the limiting mechanism 6. In this embodiment, by cooperating with the lifting mechanism 5 through the positioning hole 25 at the bottom of the positioning sleeves 24, the positioning tray 2 can be accurately guided and positioned when the lifting mechanism 5 is in operation, significantly improving the stability and positional accuracy of the positioning tray 2 during the lifting process. The limit block 26 is made of aviation aluminum, and when it contacts the limiting mechanism 6, it can achieve accurate and reliable impact limiting.

[0033] The lifting mechanism 5 includes a support platform 51, which is connected to the side of the support leg of the roller conveyor 1. A linear drive device 52 is detachably installed in the middle of the support platform 51. The output shaft of the linear drive device 52 is connected to a lifting plate 53. The four corners of the bottom of the lifting plate 53 are connected to the support platform 51 through telescopic guide columns 54. Each of the four corners of the top of the lifting plate 53 is connected to a support column 55. Two of the support columns 55 are provided with positioning protrusions 56, which match the positioning holes 25. The side of the support column 55 is connected to the limiting mechanism 6. In this embodiment, the linear drive device 52 can be a cylinder, an electric actuator, or a servo electric actuator. The lifting mechanism 5 has three working positions: the first position is the reset state, at which time the support... Both the support column 55 and the limiting mechanism 6 are in a low position, which does not affect the normal conveying of the positioning pallet 2 on the roller conveyor 1. When positioning is required, the linear drive device 52 is activated, driving the lifting plate 53 to rise to the second station. At this time, the limiting mechanism 6 blocks the limiting block 26, restricting the movement of the positioning pallet 2. Finally, the linear drive device 52 continues to drive the lifting plate 53 and the positioning pallet 2 to rise to the third station. During this process, the positioning pin 4 connects with the positioning hole 25 to ensure the stability of the positioning pallet 2 during lifting. Subsequently, the mechanical claw grabs the gearbox housing for cleaning. After the cleaning operation is completed, the linear drive device 52 drives the lifting plate 53 to descend, passing through the second station and finally returning to the first station. The positioning pallet 2 then descends and is supported again by the conveyor rollers, and can then continue to be conveyed to other stations. This lifting mechanism 5, through multi-station collaborative operation, achieves accurate positioning, stable lifting and reliable reset of the positioning pallet 2, effectively ensuring the smooth progress of subsequent cleaning operations.

[0034] The limiting mechanism 6 includes a mounting plate 61 connected to the support column 55. Limiting columns 62 are symmetrically connected to both sides of the support column 55. A convex limiting block 63 is located at the top of the limiting column 62. During the process of the lifting plate 53 driving the support column 55 to rise or fall, the middle part of the convex limiting block 63 can rise and fall accordingly and abut against the limiting stop 26, thereby realizing the limiting function. In this embodiment, the limiting mechanism 6 is connected to the support column 55 through the mounting plate 61. When the support column 55 rises and falls, it will drive the convex limiting block 63 on the side to rise and slide on the inner wall of the roller conveyor 1, thereby playing a limiting role. This structure uses the lifting motion of the lifting mechanism 5 itself to drive the limiting function, realizes the linkage between positioning and limiting actions, simplifies the structure and improves the coordination and reliability of the system.

[0035] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A conveying and positioning fixture for cleaning a transmission housing, characterized in that: The system includes a multi-section roller conveyor (1) connected to each other. A positioning tray (2) is provided on the top of the roller conveyor (1). Multiple supports (3) and positioning pins (4) are arranged at intervals on the top surface of the positioning tray (2). The supports (3) and positioning pins (4) are used to cooperate with the corresponding structures on the corresponding model of the gearbox housing to achieve positioning connection. A lifting mechanism (5) is installed at the bottom end of the roller conveyor (1). The top of the lifting mechanism (5) is set corresponding to the positioning tray (2). A limiting mechanism (6) is also provided at the rear end of the lifting mechanism (5) to limit the positioning tray (2).

2. The conveying and positioning fixture for cleaning a transmission housing according to claim 1, characterized in that: The support (3) includes a positioning support one (31) arranged in a triangle and a positioning support two (32) arranged in a trapezoid, both of which are installed on the top surface of the positioning tray (2).

3. The conveying and positioning fixture for cleaning a transmission housing according to claim 1, characterized in that: The positioning tray (2) has wear-resistant sliding strips (21) symmetrically arranged on both sides of its bottom.

4. The conveying and positioning fixture for cleaning a transmission housing according to claim 1, characterized in that: The positioning tray (2) is symmetrically equipped with side guide plates (22) on both sides.

5. The conveying and positioning fixture for cleaning a transmission housing according to claim 4, characterized in that: Two sets of buffer rubber blocks (23) are symmetrically installed on the other two sides adjacent to the two sides on which the side guide plates (22) are installed.

6. The conveying and positioning fixture for cleaning a transmission housing according to claim 1, characterized in that: The positioning tray (2) is symmetrically provided with positioning sleeves (24), and the positioning sleeves (24) have positioning holes (25) in the middle. The positioning tray (2) is detachably connected to a limit block (26) in the middle of its forward direction. The positioning sleeves (24) are used to cooperate with the lifting mechanism (5), and the limit block (26) is used to cooperate with the limiting mechanism (6).

7. The conveying and positioning fixture for cleaning a transmission housing according to claim 6, characterized in that: The lifting mechanism (5) includes a support platform (51), which is connected to the side of the support leg of the roller conveyor (1). A linear drive device (52) is detachably installed in the middle of the support platform (51). The output shaft of the linear drive device (52) is connected to the lifting plate (53). The four corners of the bottom of the lifting plate (53) are connected to the support platform (51) through telescopic guide columns (54). The four corners of the top of the lifting plate (53) are all connected to support columns (55). Two of the support columns (55) are provided with positioning protrusions (56). The positioning protrusions (56) match the positioning holes (25). The side of the support column (55) is connected to the limiting mechanism (6).

8. The conveying and positioning fixture for cleaning a transmission housing according to claim 7, characterized in that: The limiting mechanism (6) includes a mounting plate (61), which is connected to the support column (55). Limiting columns (62) are symmetrically connected to both sides of the support column (55). The top of the limiting column (62) has a convex limiting block (63). During the process of the lifting plate (53) driving the support column (55) to rise or fall, the middle part of the convex limiting block (63) can rise and fall accordingly and abut against the limiting stop (26), thereby realizing the limiting function.

Images